to solve the system 3x+3y=−3 23x+y=1.

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter9: Systems Of Linear Equations
Section9.2: The Substitution Method
Problem 41WE
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Question

Use the fact that

  3 3  
23 1
−1=
  1 −3  
−23 3

to solve the system

3x+3y=−3
23x+y=1
.
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